Company lists · Data refreshed September 2026

Top 25 Email marketing optimization firms based in the United Kingdom

RevenueBase identified 416 company matches for email marketing optimization firms associated with the United Kingdom as of September 2026 and tracks 9,961 professional contacts across them, including 502 with verified work emails and 1,696 with mobile numbers. London is the largest hub.

This list covers company matches for email marketing optimization firms associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 1, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 1, 2026 How this list was built
416Companies
9,961Contacts tracked
502Verified emails
1,696Mobile numbers
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The 25 largest email marketing optimization firms based in the United Kingdom

Ranked by team size
Top 25 of 416 company matches for email marketing optimization firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 1, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United Kingdom51-200103 contacts →

Exact match

“At EmailClub, we are building the strongest CRM team on the market.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
2Exact matchLondon, United Kingdom51-200103 contacts →

Exact match

“Underground Ecom is a rapidly growing Email marketing agency specialising in helping ecommerce businesses reach their full potential through retention marketing.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
3Exact matchChalgrove, United Kingdom11-5072 contacts →

Exact match

“Founded in 2004, 1973 Ltd is an experienced, proven marketing agency who specialise in email and automation.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
4Exact matchLondon, United Kingdom11-5032 contacts →

Exact match

“Deliver the perfect email straight to your audience's inbox and grow a thriving customer base with Moosend.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
5Exact matchLondon, United Kingdom51-20029 contacts →

Exact match

“Folderly is an all-in-one email deliverability platform to supercharge your email performance.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
6Exact matchLondon, United Kingdom11-5029 contacts →

Exact match

“KlickTipp offers innovative email marketing and marketing automation services and it is the first learning email marketing solution with unique tagging system.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
7Exact matchBristol, United Kingdom51-20025 contacts →

Exact match

“MHI Media is a digital marketing agency, which delivers services, such as cross-platform media buying, email marketing, optimization of conversion rates, in-house graphic…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
8Exact matchWinchester, United Kingdom11-5024 contacts →

Exact match

“TLC Business is a marketing company that specialises in helping ambitious SMEs grow.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
9Exact matchLondon, United Kingdom11-5023 contacts →

Exact match

“We're Hookflash.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
10Exact matchWhitchurch, United Kingdom11-5021 contacts →

Exact match

“120Feet is a digital consultancy with a mission to help businesses generate higher conversion, sales and profit from the best possible application of their online marketing…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
11Exact matchBrighton, United Kingdom11-5018 contacts →

Exact match

“At AuraSeed, we know the frustrations many founders have with agencies: overpromising, underdelivering, and leaving you wondering if you’re just funding their payroll.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
12Exact matchLondon, United Kingdom11-5016 contacts →

Exact match

“OHM is a London-based email marketing agency.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
13Exact matchNorth Shields, United Kingdom51-20016 contacts →

Exact match

“Campaigner helps marketers unlock the power of their customer data to create personalized, 1:1 interactions that drive incremental revenue, engagement, and increased customer…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
14Exact matchMacclesfield, United Kingdom11-5013 contacts →

Exact match

“Generating leads for businesses is what we do, and what we’ve been doing since 2005.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
15Exact matchLondon, United Kingdom11-5013 contacts →

Exact match

“Jarrang is a leading email marketing / CRM agency, renowned for creating and executing innovative email marketing strategies for global brands.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
16Exact matchPeterborough, United Kingdom11-5012 contacts →

Exact match

“Turn clicks into customers, and customers into loyal fans.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
17Exact matchLondon, United Kingdom11-5012 contacts →

Exact match

“At Growth Savvy, we specialize in digital analytics, advertising and conversion optimization:#You'll understand what drives success and find new growth opportunities through…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
18Exact matchLondon, United Kingdom11-5011 contacts →

Exact match

“Founded with the vision of revolutionizing email marketing for e-commerce brands.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
19Exact matchLostwithiel, United Kingdom11-5011 contacts →

Exact match

“We specialize in helping companies achieve a greater ROI on their email marketing and SMS by improving their strategy and optimizing their campaigns.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
20Exact matchQuedgeley, United Kingdom11-5010 contacts →

Exact match

“Marketing Punch are specialists in direct marketing, and can provide a fast, low cost and effective method of targeting responsive prospects via our databases.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
21Exact matchLondon, United Kingdom51-2009 contacts →

Exact match

“Retention-Focused Email & CRM Marketing Agency Enviary is a global growth agency specialising in email marketing, CRM automation, and customer retention.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
22Exact matchLondon, United Kingdom51-2009 contacts →

Exact match

“We are in the midst of a shift in business models, powered by the modern SaaS economy, developments in technology and digitalisation of consumer behaviour.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
23Exact matchNewmarket, United Kingdom11-508 contacts →

Exact match

“Premier Google Partner, in the top 5% of UK based Google Partners.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
24Exact matchBristol, United Kingdom11-508 contacts →

Exact match

“Taking people on journeys they love.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
25Exact matchAshford, United Kingdom11-508 contacts →

Exact match

“We are MailXpertise, a global ESP (email service provider), specialists in made-to-measure email and SMS solutions for marketing professionals.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase

Showing 25 of 416 email marketing optimization firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 502 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Email marketing optimization firms based in the United Kingdom at a glance

As of Sep 1, 2026
5.0%Verified-email coverage
17.0%Mobile-number coverage
23.9Average contacts per company
1-10Median size (employees)
37.0%Largest-city concentration · London
Sep 1, 2026Page data refreshed

Companies by employee count

1-10
321
11-50
71
51-200
10
201-500
6
501-1,000
1

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United Kingdom whose business descriptions match “email marketing optimization firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 502 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 1, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Email marketing optimization firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “email marketing optimization firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many email marketing optimization firms are there based in the United Kingdom?

RevenueBase identified 416 company matches for email marketing optimization firms associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Emailclub tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most email marketing optimization firms?

London leads with 154 company records, followed by Manchester (16) and Bristol (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 502 professional contacts with verified work emails tracked across these 416 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 1, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.